| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in a [noun] | 61368 |
|
| 2 | in a [noun sg] | 58249 |
|
| 3 | [prep] a period | 2137 |
|
| 4 | [prep] a period | 2137 |
|
| 5 | in [art] period | 854 |
|
| 6 | in [art] period | 854 |
|
| 7 | in a period | 180 |
|
| 8 | in a period | 180 |
|
| 9 | in a period | 180 |
|
